How long does it take you to recover from an hour workout?

Today I did some basic exercises (pushups, crunches, flutterkicks, etc) then did a short run and a few sprints. The whole workout lasted about an hour. The sad part is.. I felt nauseous/beat for a half hour or more afterward. I would understand if I was totally out of shape.. but I exercise at least 4 times a week.. and have for some time. How long does it take you to recover from a similar hour workout? Is it just dehydration? What could cause this?

I also noticed that when I have run for about half an hour doing sprints or just running hard that I feel this strange pressure in my ear.. almost like my ear needs to pop..not really sure how to describe it. Is this typical?